.App {
  width: 100vw;
  height: 100vh;
}

.App .tab_bar {
  width: 100vw;
  height: 54px;
  background: white;
  position: fixed;
  bottom: 0;
  box-shadow: 0 0 2px #e8e8e8;
  display: flex;
  align-items: center;
  z-index: 99;
}

.App .tab_bar a {
  flex: 1;
  height: 100%;
  line-height: 54px;
  text-align: center;
  color: #7e7e7e;
  font-size: 14px;
  text-decoration: none;
}

.App .tab_bar a.active {
  color: red;
}
